diff --git a/src/tests.asm b/src/tests.asm
index 7016b26..fb0a69d 100644
--- a/src/tests.asm
+++ b/src/tests.asm
@@ -162,7 +162,7 @@ _start:
 	xor	r14, r14 ;OK tests (assert => true)
 
 ;--- islower()
-%if TEST_tolower
+%if TEST_islower
 	printTestHeader(_islower)
 
 	; TEST 1: islower('d')